A029893 Number of graphical partitions with up to n parts (?).

1, 2, 4, 10, 24, 68, 198, 656, 2112

Offset

1,2

References

R. A. Brualdi, H. J. Ryser, Combinatorial Matrix Theory, Cambridge Univ. Press, 1992.

Links

Table of n, a(n) for n=1..9.

T. M. Barnes and C. D. Savage, A recurrence for counting graphical partitions, Electronic J. Combinatorics, 2 (1995).

Index entries for sequences related to graphical partitions

Formula

Calculated using Cor. 6.3.3, Th. 6.3.6, Cor. 6.2.5 of Brualdi-Ryser.

Crossrefs

Cf. A000569, A004250, A004251, A029889.

A possible duplicate of A028506.

Sequence in context: A309504 A148088 A028506 * A372123 A148089 A363065

Adjacent sequences: A029890 A029891 A029892 * A029894 A029895 A029896

Keyword

nonn,more,obsc

Author

torsten.sillke(AT)lhsystems.com

Status

approved